Army ants scare up a lot of food when they’re on the move, which makes following them valuable for predator birds. But instead of competing and chasing each other off from the ant "raids," as scientists had thought, birds actually give each other a heads up when the ants are marching, according to a new Drexel University study.

Europe’s wild snakes could face a growing threat from a fungal skin disease that has contributed to wild snake deaths in North America, according to an international collaborative study, led by conservation charity ZSL (Zoological Society of London) alongside partners including the U.S. Geological Survey. The new study is published in the journal Scientific Reports.

A cup (or two) of coffee is a regular start to the day for many people. However, new research from the USA suggests that America’s caffeine habit may be contributing new stresses to the country’s aquatic ecosystems.